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September 26, 2005

Mysterious Stars Surround Andromeda's Black Hole

Stars race around a black hole at the center of the Andromeda galaxy so fast that they could go the distance from Earth to the Moon in six minutes.

The finding, announced today, solves a mystery over the source of strange blue light coming from Andromeda's center. But it generates a new puzzle: The stars' phenomenal orbital velocity suggests they should never have formed in the first place.

Astronomers first spotted the blue light near Andromeda's core in 1995. Three years later, another group determined that the light emanated from a cluster of hot, young stars. Nobody knew how many were involved.

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September 26, 2005 in Tech/Science | Permalink

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